OEVT (USB3_XHCI) Register Description
| Register Name | OEVT |
|---|---|
| Offset Address | 0x000000CC08 |
| Absolute Address |
0x00FE20CC08 (USB3_0_XHCI) 0x00FE30CC08 (USB3_1_XHCI) |
| Width | 32 |
| Type | mixedMixed types. See bit-field details. |
| Reset Value | 0x00000000 |
| Description | OTG Events Register Any event set in this register will cause otg_interrupt signal to go high. Writing 1b1 to the event information bit in this register clears the register bit and the associated interrupt. The otg_interrupt signal goes low when there are no more pending OTG events. |
OEVT (USB3_XHCI) Register Bit-Field Summary
| Field Name | Bits | Type | Reset Value | Description |
|---|---|---|---|---|
| DeviceMode | 31 | roRead-only | 0 | Device Mode Indicates whether the device is in A-device or B-device mode based on utmiotg_iddig - 1b0: A-Device mode - 1b1: B-Device mode The rest of the OTG Event Information bits (OTGxxxxEvtInfo) in OEVT register is based on the contents of this field. |
| Reserved | 30:28 | roRead-only | 0x0 | Reserved |
| OTGXhciRunStpSetEvnt | 27 | wtcReadable, write a 1 to clear | 0x0 | OTG Host Run Stop Set Event This event is set when the Host Driver programs the USBCMD.Run/Stop to 1b1. Note: - During Hibernation Exit, upon receiving this event, the OTG Driver can start register accesses to the core. - This bit is applicable for OTG 2.0 and OTG 3.0 modes of operation. |
| OTGDevRunStpSetEvnt | 26 | wtcReadable, write a 1 to clear | 0x0 | OTG Device Run Stop Set Event This event is set when the Device Driver programs the DCTL.Run/Stop to 1b1. Note: During Hibernation Exit, upon receiving this event, the OTG Driver can start register accesses to the core. |
| OTGHibEntryEvnt | 25 | wtcReadable, write a 1 to clear | 0x0 | OTG Hibernation Entry Event: - A-Device mode: This event is set when there is hibernation save request from the Host Driver by programming USBCMD.CSS bit to 1 when USBCMD.RunStp is 0. - B-Device mode: This event is set when there the Device Driver by programming DCTL.RunStp bit to 0. When this event is generated, the OTG Driver must disable all register accesses to the core. |
| OTGConIDStsChngEvnt | 24 | wtcReadable, write a 1 to clear | 0x0 | Connector ID Status Change Event Set in both A-Dev/B-Dev Mode. This event is generated when there is a change in connector ID status. When this bit is set, OEVT.OTGConIDStsChngEvnt is enabled. If not, the event is disabled. |
| HRRConfNotifEvnt | 23 | wtcReadable, write a 1 to clear | 0x0 | Host Role Request Confirm Notifier Event The core sets this bit after receiving a Host Role Request Device Notification TP with Confirm field set while operating as either an A-host or a B-host. Note: - This bit is applicable only when operating in SS mode. - This bit is applicable only for OTG 3.0 mode of operation. |
| HRRInitNotifEvnt | 22 | wtcReadable, write a 1 to clear | 0x0 | Host Role Request Initiate Notifier Event The core sets this bit after receiving a Host Role Request Device Notification TP with Initiate field set while operating as either an A-host or a B-host. |
| OTGADevIdleEvnt | 21 | wtcReadable, write a 1 to clear | 0 | A-device A-IDLE Event Set in A-device Mode Only. The event is generated when A-device enters A-IDLE state. This event is set when the OTG 2.0 FSM of the core enters A-IDLE state from any other OTG state. A-device A-IDLE Event When this bit is set, OEVT.OTGADevIdleEvnt is enabled. If not, the event is disabled. |
| OTGADevBHostEndEvnt | 20 | wtcReadable, write a 1 to clear | 0x0 | A-device B-Host End Event Set in A-device Mode Only. The event is generated when B-device has completed its host role. Note: This bit is applicable for OTG 2.0 and OTG 3.0 modes of operation. When this bit is set, OEVT.OTGADevBHostEndEvnt is enabled. If not, the event is disabled. |
| OTGADevHostEvnt | 19 | wtcReadable, write a 1 to clear | 0x0 | A-device host event Set in A-device Mode Only. This event is generated when A-device enters host role. In HS/FS mode, it occurs after the initial connect to a B-device as A-host as well as when there is a role change from A-peripheral to A-host. Note: This bit is applicable only for OTG 2.0 mode of operation. |
| OTGADevHNPChngEvnt | 18 | wtcReadable, write a 1 to clear | 0x0 | A-Dev HNP Change Event Set in A-device Mode Only. The event is generated when there is an HNP attempt. Note: This bit is applicable only for OTG 2.0 mode of operation. A-Dev HNP Change EventEn (OTGADevHNPChngEvntEn) When this bit is set, OEVT.OTGADevHNPChngEvnt is enabled. If not, the event is disabled |
| OTGADevSRPDetEvnt | 17 | wtcReadable, write a 1 to clear | 0x0 | SRP Detect Event Set in A-device Mode Only. This event is asserted when a session request from the B-device is detected via SRP. Note: This bit is applicable for OTG 2.0 and OTG 3.0 modes of operation. A-Dev HNP Change EventEn (OTGADevHNPChngEvntEn) When this bit is set, OEVT.OTGADevHNPChngEvnt is enabled. If not, the event is disabled. |
| OTGADevSessEndDetEvnt | 16 | wtcReadable, write a 1 to clear | 0x0 | Session End Detected Event Set in A-device Mode Only. This event is asserted when the utmiotg_vbusvalid signal goes low indicating the end of a session. Note: This bit is applicable for OTG 2.0 and OTG 3.0 modes of operation. When this bit is set, OEVT.OTGADevSessEndEvnt is enabled. If not, the event is disabled. |
| Reserved | 15:12 | roRead-only | 0x0 | Reserved |
| OTGBDevBHostEndEvnt | 11 | wtcReadable, write a 1 to clear | 0x0 | B-Device B-Host End Event Set in B-device Mode Only. This event is generated when B-device has completed its host role. Note: This bit is applicable for OTG 2.0 and OTG 3.0 modes of operation. When this bit is set, OEVT.OTGBDevHostEndEvnt is enabled. If not, the event is disabled. |
| OTGBDevHNPChngEvnt | 10 | wtcReadable, write a 1 to clear | 0x0 | B-Dev HNP Change Event: Set in B-Device Mode only. This event is generated when there is a Success or Failure of an HNP attempt. Note: This bit is applicable for OTG 2.0 and OTG 3.0 modes of operation. When this bit is set, OEVT.OTGBDevHNPChngEvnt is enabled. If not, the event is disabled. |
| OTGBDevSessVldDetEvnt | 9 | wtcReadable, write a 1 to clear | 0x0 | Session Valid Detected Event Set in B-device Mode Only. This event is asserted when there is a valid Vbus from A-device and B-device succeeds in starting a session. Note: This bit is applicable for OTG 2.0 and OTG 3.0 modes of operation. |
| OTGBDevVBUSChngEvnt | 8 | wtcReadable, write a 1 to clear | 0x0 | Vbus Change Event Set in B-device Mode Only. This event is asserted when the utmisrp_bvalid signal goes low (indicating the end of a session), or goes high. Note: This bit is applicable for OTG 2.0 and OTG 3.0 modes of operation. When this bit is set, OEVT.OTGBDevVBUSChngEvnt is enabled. If not, the event is disabled. |
| Reserved | 7:4 | roRead-only | 0x0 | Reserved |
| BSesVld | 3 | roRead-only | 0 | Indicates the Device mode transceiver status. Indicates the Device mode transceiver status. The core updates this bit when: OEVTEN.OTGBDevVBUSChngEvnt is set. - 1b0: B-session is not valid - 1b1: B-session is valid Note: This bit is applicable for OTG 2.0 and OTG 3.0 modes of operation. |
| HstNegSts | 2 | roRead-only | 0 | Host Negotiation Status The core updates this bit when any of the following bits is set: - OEVTEN.OTGADevHNPChngEvnt - OEVTEN.OTGBDevHNPChngEvnt This bit indicates Host Negotiation Success or Failure. 1b0: Host negotiation failure. - In A-device, for HS/FS, this indicates an imminent end of session indication from the core. - In B-device, for HS/LS, it indicates that the timer used to wait for an A-device to signal a connection (b_ase0_brst_tmout in OTG 2.0) timed out resulting in B-device staying as B-peripheral. 1b1: Host negotiation success. - This indicates that the host negotiation was successful. Note: This bit is applicable only for OTG 2.0 mode of operation. |
| SesReqSts | 1 | roRead-only | 0 | Session Request Status Ignore this field. It is used only for internal testing. |
| OEVTError | 0 | wtcReadable, write a 1 to clear | 0x0 | OTG Event Error There are no errors currently defined. |